Polar Graph Paper: Circular Grid Notebook (150 pages, 5-15-30 degree angles with 1/8 inch radials) (Classic Notebooks)

We intend this polar coordinate paper notebook for teachers, students, engineers, designers, but also for sketchers and hobbyists for drawing geocentric figures and patterns. It will help in trigonometry classes or in-field calculations in physics, but also in the design of logos, baskets, or mandalas.
Product features

Light gray circular grid: clearly visible but not too dominant.
5-degree angles (angles every 15 and 30 degrees are a bit darker and are labeled).
1/8-inch radials (radials every 1/2 and 1 inch are bit darker)
8.5 x 8.5 inch (21.59 x 21.59 cm) convenient size.
Quality 90 GSM white paper that prevents bleeding through pages.
150 pages numbered on the odd sides. 
Table of contents for easy sketch tracking.
Premium, matte softcover.
Bonus cheat sheet with classic polar graphs and equations.

Click on the Classic Notebooks link below the title to view other journals with different interior printings (e.g. dot, lined, quad, hexagonal).